The Niagara Falls have been partly frozen into a cascade of icicles as a result of the extremely cold weather in Canada and the US.
These photos show the US side of the falls pictured from Ontario in Canada on Wednesday.
As much of the US experiences a dangerous and severe cold spell, does the UK have anything to worry about?
As the US battles sub-zero temperatures, ITV News Washington correspondent Robert Moore illustrates just how cold it is in Minnesota.
Leaders across America are urging residents to stay in their homes as "polar vortex" batters the east coast after snowstorm Hercules.